Freezing drizzle can cause extremely dangerous (life threatening) driving conditions. This ice storm rating scale is NOT intended to be used for travel planning purposes or to rate travel …

An Ice Storm is a freezing rain situation (rain that freezes on surface contact) with significant ice accumulations of 0.25 inches or greater. In the National Risk Index, an Ice Storm Risk Index …

Mar 1, 2018 · The Sperry–Piltz Ice Accumulation Index, or SPIA® Index, is a forward-looking, ice accumulation and ice damage prediction index that uses an algorithm of researched …

Jan 31, 2022 · Here's a breakdown of what types of impacts and damage you can expect from different accretion ranges of ice. Less than one-quarter inch of ice is generally considered a …

Ice storms, or freezing rain events, can damage utilities, communication networks, agriculture, transportation, housing, and trees. Even minimal amounts of ice accumulation can cause …

Winter Weather consists of winter storm events in which the main types of precipitation are snow, sleet, or freezing rain. In the National Risk Index, a Winter Weather Risk Index score and …

Aug 5, 2014 · We have compiled information on damaging freezing rain storms (ice storms, silver thaws, blue northers) from many CRREL projects between 1993 and 2009 to estimate the …

Jan 17, 2025 · This chart shows temperatures and types of winter precipitation above and below the freezing point of 32 F (0 C). They are snow, sleet, freezing rain and rain. Image via NWS.

Mar 6, 2024 · The compound hazard comprising freezing rain, ice accumulation, and wind gusts is a major source of socio-economic losses across North America and beyond. We present the …

Most freezing rain storms create transportation issues and slip & fall issues. The true ice storms with large accumulations (>1") of glazing/freezing rain on trees and power lines, etc., are …